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QuickJS
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Lapce
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Medium
Extism is the open source, universal plug-in system. Extend all the software everywhere! Powered by WebAssembly.

Slack
Mattermost
Discord
Element.io
Telegram
Zulip
Microsoft Teams
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Which is more popular?
Based on our record, Rocket.Chat should be more popular than Extism. It has been mentioned 68 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | extism.org | rocket.chat |
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| Company | — | Startup from Brazil · 50 - 99 employees · 2016 |
| Listed in |
What each product offers, as listed by its team.


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Possible disadvantages
An editorial look at what each product does well and who it suits.


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Overall verdict
Why this product is good
Recommended for
Rocket.Chat is well-suited for businesses and organizations that require a secure and customizable communication platform. It's particularly recommended for IT teams, tech-savvy businesses, or community groups comfortable with managing an open-source solution. It's also a great choice for organizations that need to meet strict data privacy and compliance requirements.
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What does Rocket.Chat look like?
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Extism and Rocket.Chat. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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While Mattermost supports internal communication, Rocket.Chat has extended abilities that promote internal as well as external communication with customers, suppliers, vendors, and others. Also, the platform attaches...
Let us know if you want to have a quick chat with our team over here at Rocket.Chat to go through the most important advantages Rocket.Chat holds over Webex.
Recommendations tracked on public social media and blogs since March 2021.


Technically WASI 0.1, but I used it (via Extism[0]) to implement a simple login library[1] that works in Rust, Go, and Node. Would be trivial to add other lanugages supported by Extism. Overall I loved the dev experience. [0]:... - Source: Hacker News / 3 months ago
I tinkered with https://extism.org and basically the use case is that they suggest, namely you can extend software in another programming language but without having to setup a container or VMs on the client. They "just" run the code in... - Source: Hacker News / 3 months ago
Check out https://extism.org, it is built for those kinds of use cases. However I think WASI and components could enhance it. - Source: Hacker News / 3 months ago
Indie hackers also leverage collaboration tools like Nextcloud for file sharing and team projects, and Mattermost or Rocket.Chat as self-hosted alternatives to Slack. These tools empower remote teams and foster efficient communication... - Source: dev.to / over 1 year ago
Communication tools such as Mattermost and Rocket.Chat support team collaboration. - Source: dev.to / over 1 year ago
Rocket.Chat is an open source communication platform that allows teams to collaborate in real-time. It supports text, voice, and video communication and integrates with various other tools and services. Learn more about Rocket.Chat on... - Source: dev.to / over 2 years ago
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